2120539 has 4 divisors (see below), whose sum is σ = 2123640. Its totient is φ = 2117440.

The previous prime is 2120537. The next prime is 2120549. The reversal of 2120539 is 9350212.

2120539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2120539 - 2¹ = 2120537 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (530910).

2^2120539 is an apocalyptic number.

2120539 is a deficient number, since it is larger than the sum of its proper divisors (3101).

2120539 is a wasteful number, since it uses less digits than its factorization.

2120539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2120539 is about 1456.2070594527. The cubic root of 2120539 is about 128.4740519000.

The spelling of 2120539 in words is "two million, one hundred twenty thousand, five hundred thirty-nine".